APA (7th ed.) Citation

Christian, R. W. (1962). Guides to Programed Learning. Harvard Business Review, 40(6), 36.

Chicago Style (17th ed.) Citation

Christian, Roger W. "Guides to Programed Learning." Harvard Business Review 40, no. 6 (1962): 36.

MLA (9th ed.) Citation

Christian, Roger W. "Guides to Programed Learning." Harvard Business Review, vol. 40, no. 6, 1962, p. 36.